Inventor · disambiguated record
Masayuki Umehara
Also filed as: UMEHARA MASAYUKI
6 granted patents·1 pending application·60 citations·filing 1997–2003
81Inventor score
Files withKOITO MFG CO LTD7
Top patents by PatentIndex Score
7 records- 0188US6557379B1Method of producing an arc tubeKOITO MFG CO LTD·Filed 2000·Granted May 6, 2003·19 cites·5 claims
- 0262US6215236B1Halogen lamp having thick wall pinch seal portionKOITO MFG CO LTD·Filed 1998·Granted Apr 10, 2001·16 cites·8 claims
- 0354US6528931B1Electric light bulb with base held by positioning ring having elastic pieces and weld piecesKOITO MFG CO LTD·Filed 1998·Granted Mar 4, 2003·13 cites·7 claims
- 0453US5994825AElectric lamp with a baseKOITO MFG CO LTD·Filed 1997·Granted Nov 30, 1999·11 cites·7 claims
- 0544US6653785B2Arc tube with pinch seal and dimensional relationship and method for forming the sameKOITO MFG CO LTD·Filed 2001·Granted Nov 25, 2003·1 cites·11 claims
- 0638US2004051460A1Discharge bulbKOITO MFG CO LTD·Filed 2003·Application pending·0 cites
- 0736US6843698B2Arc tube and method of producing the sameKOITO MFG CO LTD·Filed 2003·Granted Jan 18, 2005·0 cites·8 claims
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